From: Julien Lepiller <julien@lepiller.eu>
To: "Miguel Ángel Arruga Vivas" <rosen644835@gmail.com>,
45675@debbugs.gnu.org
Subject: bug#45675: Zip-based archives store timestamps
Date: Tue, 05 Jan 2021 10:17:53 -0500 [thread overview]
Message-ID: <A31236B2-CEEC-4E96-89B8-29CB40147E2C@lepiller.eu> (raw)
In-Reply-To: <877dor34xe.fsf@gmail.com>
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For java packages, we have a strip-jar-timestamps phase in the ant-build-system.
Le 5 janvier 2021 08:10:37 GMT-05:00, "Miguel Ángel Arruga Vivas" <rosen644835@gmail.com> a écrit :
>A procedure like reset-gzip-timestamp should be useful for
>reproducibility purposes, adapted to zip based archives as Smalltalk's
>STAR or Java's JAR binary formats, as some or all of their contents are
>generated usually at build time.
>
>On the latest Zip specification[1], which only seem to be encumbered
>regarding encryption, there is one header ID which could be used for
>timestamp purposes (0x0020) but third party header IDs are allowed,
>which include a "commonly used" 0x5455 timestamp.
>
>[1] https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE-6.3.8.TXT
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next prev parent reply other threads:[~2021-01-05 15:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-05 13:10 bug#45675: Zip-based archives store timestamps Miguel Ángel Arruga Vivas
2021-01-05 15:17 ` Julien Lepiller [this message]
2021-01-06 22:34 ` Miguel Ángel Arruga Vivas
2021-01-06 23:10 ` Julien Lepiller
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